# SHERIDAN ENERGY INC — SC 14D1/A

SHERIDAN ENERGY INC of HOUSTON, TX filed a SC 14D1/A with the SEC on 1999-09-08. Industry: Oil & Gas Field Exploration Services.

## Filing

- Filed: 1999-09-08
- Form: SC 14D1/A
- Accession: 0000950123-99-008323
- Registrant: SHERIDAN ENERGY INC
- CIK: 0001018355
- Industry (SIC): Oil & Gas Field Exploration Services (1382)
- State of incorporation: DE
- Location: HOUSTON, TX

## Filing timeline for this registrant (6)

| Filed | Form |
| --- | --- |
| [1999-09-29](https://search.stillhousedata.com/proxy/0000950123-99-008946) | SC 14D1/A |
| 1999-09-08 | SC 14D1/A |
| [1999-08-31](https://search.stillhousedata.com/proxy/0000950129-99-003954) | SC 14D9 |
| [1999-08-31](https://search.stillhousedata.com/proxy/0000950123-99-008131) | SC 14D1 |
| [1999-04-27](https://search.stillhousedata.com/proxy/0000899243-99-000812) | DEF 14A |
| [1998-04-13](https://search.stillhousedata.com/proxy/0000899243-98-000628) | DEF 14A |

## Co-filers (1)

- CALPINE CORP

## More

- [CIK 1018355 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1018355&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/proxy/0000950123-99-008323.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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